Improvement in scissors-grinding attachments for sewing-machines



RUSSELL s. MORSE.

Improvement in Scissors Grinding Attachment for Sewing Machines;

NO 121,537, Patented Dec.5,18i1.

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a v 60 E 4 4 Ill Va/M44" t v h/zan/llbr UNITED STATES -PATENT OFFICE.

RUSSELL S. MORSE, OF EAST DIXFIELD, MAINE.

Specification forming part of Letters Patent No. 121,537, dated December5, 1871.

To all whom it may concern:

Be it known that I, RUssELL S. MORSE, of East Dixfield, in the county ofOxford and State of Maine, have invented certain Improvements inGrindingAttaclnnent for Sewing-Machines, of which the following is aspecification:

Figure l in the drawing is a front view, and Fig. 2 is atransverseyertical section through one end of myimproved apparatus. Fig.3 is a part, in detail, of a modification of my apparatus.

The object of the present invention is to produce a simple and.convenient apparatus which may be readily adjusted to a sewing-machineor other frame or table, and by means of which scissor or other bladesmay be evenly and efficiently I sharpened. My improvement consists in soforming and operating a series of devices connected with a sewing-ma'chine or other frame, and to be explained more fully hereinafter,as to adjust and hold a scissor or other blade at any desired angle witha revolving grinding-wheel, thereby allowing an even and uniform edge tobe formed on the blade. It also consists of so arranging and operatingthe apparatus hereinafter described as to admit of its being turnedunder the table or frame when not in use.

a a a in the drawing represent a sewing-ma chine or other frame, towhich my improved apparatus is attached by means of a slotted bar, I),which plays on a thumb-screw, c, by which it is secured to the frame a ca, and which allows of its being turned under the frame a a a when notin use. The slotted bar I) is forured with a bar, d, at right angleswith it, extending downward, and provided with standards 6 e whichsupport an axle, j, that revolves a grinding-wheel, g, and a wheel, h,which connects, by means of a cord or belt, 2', with a flywheel, 70,attached to an axle, l, which is operated by a crank, m, or by any othersuitable means. Attached to the standard a is a curved arm, 12, formedwith a slot, 0, working on a screw-bolt, 19. Connected with the arm n isa curved arm, q, turning on a screw-pivot, r. The upper portion of thearm q has formed at right angles'to it an angular gauge piece, 8.

The operation of my improved apparatus is as follows: By unloosening thethumb-screw 0 the slotted bar I), which plays on it, and, consequently,the several appurtenances connected with the bar b, are brought out fromunder the top of the frame a a a, where they are, for convenience,usually held, into the position shown in the drawing, Fig. 2. The gaugepiece 8 is then arranged to the angle with the grinding-wheel g, towhich it is desired to grind the edge of the blade, by means of the armq turning on the screw-pivot r, by which it may be either loosened ortight ened, as required, to hold or unfasten the arm (1, together withthe curved arm n, which, by means of the slot 0 playing on thescrew-bolt 19, allows the arm (1, and, consequently, the gauge piece 8,to be adjusted in any position desired. The blade is then placed andheld between the gauge piece 8 and the grinding-wheel g, and, byoperating the fly-wheel lr, motion is imparted to the grindingwheel g,which bears against the blade, which is firmly held by the gauge piece8, thus insuring the grinding of a uniform and even edge to the scissorsor other blade.

Instead of the two adjustable arms (1 and a one stationary arm, t, Fig.3, formed with a gauge piece similar to the one, 8, formed on the arm q,may be employed; but the two adjustable arms n and q are preferable.

Having thus fully described my improvements, what I claim as myinvention, and desire to have secured to me by Letters Patent. is

An apparatus for grinding scissors and other blades arranged with anadjustable slotted bar, I), adjustable curved arms n and q or stationarysingle arm t, gauge piece 8, bar d, standards 0 and e, in combinationwith a sewing-machine or other frame, a a a, and grinding-wheel y,substantially as specified.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

- RUSSELL S. MORSE.

Witnesses CARROLL D. WRIGHT, JEssE T. WHEELER. (70)

